A new study in Nature Geoscience found that scientists may have gotten their global warming prediction wrong--in this case, the study says, climate models explain only about half of the heating that occurred during a well-documented period of rapid global warming in Earth’s ancient past.
This isn't the first time scientists have reconsidered their global warming predictions. In fact, the IPCC report on global warming--it ends up--may have been far too optimistic. Our take is here